Linkage control method for compressed air foam system

Abstract

The invention provides a linkage control method for a compressed air foam system. The linkage control method comprises the following steps of receiving a fire alarm signal, and entering a fire extinguishing process after set time delay; enabling false operation of the linkage system caused by false alarm of the fire alarm main machine to be prevented; detecting whether converter transformers to be in a maintenance state; enabling starting of the compressed air foam system to be locked according to the position state of a circuit breaker corresponding to the converter transformer where the fire occurs; enabling the circuit breaker position state to be a single circuit breaker position state or a combination of a plurality of circuit breaker position states; when enabling the position state of the circuit breaker to be a separation position, allowing the compressed air foam system to be started; and when the position state of the circuit breaker being a closed position, prohibiting the compressed air foam system from being started. According to the linkage control method, the probability of maloperation of the linkage control system caused by false alarm of the fire alarm main machine can be reduced, the phenomenon of electrified false spraying cannot occur, the possibility of accident expansion is reduced, and the reliability of the linkage control system is improved.

Description

technical field [0001] The invention belongs to the field of fire safety, and in particular relates to a method for linkage control of a compressed air foam system. Background technique [0002] The converter transformers in UHV converter stations are generally oil-immersed transformers with an oil storage capacity of more than 100 tons. Once a fire occurs, it is extremely dangerous. Compressed Air Foam System (CAFS) is a new type of fire extinguishing technology. The foam structure it produces is fine and uniform, with long liquid separation time and high stability. It can quickly extinguish oil fires and is more suitable for commutation Change fire. [0003] At present, the compressed air foam system and its transmission pipe network applied in the converter station are relatively complicated, and the linkage control system is usually used for automatic fire extinguishing. The application of the linkage control system can reduce the workload of operation and maintenance ...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the situation when a fire occurs, once the fire alarm host sends out a fire alarm signal by mistake or the signal feedback of the local firefighting equipment is wrong, it may cause the linkage control system to malfunction, which will cause the expansion of the accident.

In addition, failures of the linkage control system controller or the outlet relay will lead to failure to start fire extinguishing in time when a fire occurs, which will cause the expansion of the fire

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